Smoke-consuming furnace.



BRBRADY. SMOKE CONSUMING FURNAGB. APPLICATION FIILED AUG. 22, 1910.

Patented June 20, 1911.

RENARD F. BRADY, OF NEW YORK, Y.

SMOKE-CONSUMIN G- FRNACE.

sesgos.

Specification oi Letters Patent.

Patented June 20, 1911.

Application led August 22, 1910. Serial No. 578,279.

To all whom 'it may concern.' Be it known that I, BENARD BRADY, a citizen of the United States, residing at the vboroughof Brooklyn, city of New York, in

the county of Kings and State of New `York, have invented a new and useful Improvement in Smoke-Consuming Furnaces, of which the following is a specification.

My invention Vrelates to smoke-consuming devices, and it has for its object toetlect the entire consumption of smoke in furnaces, including all the'gases, carbonaceous materials and vother unconsunied products 4of combustion which are carried by the draft from the furnace into the smoke-flue alongewith the smoke proper. I attain this 1` or :line B', with which flue B is also proobject'by the mechanism illustratedin the accompanying drawing.

. The ligure in the drawing is a side elcv tion" of my improved smoke-consuming de vice, partly in section, in connectionwith an ordinary steam boiler furnace.

Similar letters and numbers refer to siinilar ing. The letter' B represents a smoke-flue leadingfrom'furnace A and provided with a rotary. fan or-blower l communicating with the same by means of eduction pipe 2 whichshould project into flue B in the `direction and opposite to the opening of hollow arm vided for the purpose of connecting the same with separatingtank C at a point approxin'iately two-thirds of the dist-ance from,

the top tothe bottom of said separating-tank C. Arm or flue B is provided with rotary fan or blower 3 communicatingI with the saine by means of eduction pipe 4..- .Separating-tank C, connected as aforesaid with flue' B, is provided at tl'ie top with hollow arm C, and also rotary fan or blower 5 commudownward. From the bottoni eopening d of` separating-tank C leads pipe D communicating with water tank E with its opening l1 near and Within a few feet of the bottoni of said-vvater tank E. Arm C communica-ting parts throughout the View in my drawi with separating-tank C as aforesaid, is provided with rotary fan or blower 8 communi! eating with the same by means of eduction pipe 9. Said ai'in C with converging sides leads downward to the ash-pit G of thc furnace A below the grate bars F, its open ing'lll being well below said grate bars. v Iii'order 'to eil'ectually carry all the smoke and its accompanying unconsuined products of combustion into flue l5 from iiue B, as is ereinafter described, projection Z; of eduction pipe 2 should extend into tine B to a distance lto equal one-half of the diameter of flue B; its diameter should equal thatLof tlue B, and the distance between the peiiphery of the outlet of said projection b alid the points of junction of tlue'll with flue B should also equal the diameter of B. Projection c of eduction said flue pipe 6 sliould' extend well into separating-tank C, say to distance to equal three-quarters ofthe dit;l

aineter of thc latter, so that the smoke may be etfectually forced into arni C asis begin( after described.

'Instead of pipe D leading to a water tank suchv as indicated by letter E, it inay lead to a natural body of water if suoli happens to be conveniently located. But care should be taken to have the opening ll of pipe l) enter said body of water neai and within a few feet of the bottoni, or in any event a considerable distance from the surface. Rotary :t'anor blower 8 inay be usedfor cleaning the narrow and lower end ofarin C as well as for creating the false draft tol force the smoke downward. The rotary fans or blowers l, 3, 5, and 8 may be operated by any convenient or suitable means and with any speed necessary to obtain air force slitticient for the successful operation of the device. Scliarating-tank C may be provided withV man-holes m and n in order to gain access therein for cleaning purposes.

rlhe operation of iny above describcd invention is as follows: 'lhesmoke and all unconsuined products of combustion, carried forward by the draft in furnace A into tlue B u'ntil the saine reaches the point occupied by projection l) of pipe 2, will then be forced into and' through arm or flue l' by means of the false draft created by rotary fan 'l l issuing from said projection 71, and aided by false draft created by rotary fan' 3, 'all the smoke together with its'accompanyingheavy products, carbonaceous material, etc., will enter separating-tank C. At this point said heavy products, carboiiaceous material, etc., will by force of gravity fall to the bottom of said separating-tank C and by means of a stream of water issuing from jet 7 they will be forced out of said tank C'tlirough its bottoni opening (I into pipe I), and downward through the latter`s opening 11 into water tank E, where said heavy iiiiconsuiiied products of combustion will settle at the bottom of said water tank E, or, in order to prevent the bottom of said tank E from elogging, by means of a lscreen conveyer, they may bebrought to the surface where they can be carried away through an over-tlow pipe. Returning to the point where the smoke and its accompanying heavy unconsinned products of combustion enter separating-tank C from arni or flue B', the smoke proper and gases will rise to the top of said separating-tank C and will be carried, by means of a false draft created by rotary fan 5, issuing from. rejection f', into arm C', and, aided by a alse draft created by a rotary fan 8, will be forced downward through opening 10 of said arm C into the ash-pit (ir and below grate bars F, whereupon said smoke and gases will rise as far as said grate bars F and will then be entirely consumed by means of the draft issuing trom door f to the ash-pit G and the intense heat from the tire-box.

I am well aware, that heretofore devices have been invented whereby the smoke, together with the heavy uiiconsuined products of combustion, are, by various means, forced into the ash-pit and discharged through the grate into the bed of fuel where it is iiitended that the same should be consumed by the tire.4 Nevertheless I have found b v means .of practical experiments that such heavy products, caibonaceous material, etc., originally uneonsumed by conibustifeiu. will never be entirely consumed by a second passage into the tire-box, but that on the contrary most of it has already been reduced to Aiii'eomlmstible matter and would theref(` e remain in the fuel bed, bank the fire, and possibly block the boiler tubes.

In order to cari' away the heavy unconsuined products o combustion I have provided a separating-tank C, as above-de- .sci'ib'eiL which separates the heavy products.

from the smoke proper and eliminates the necessity of forcing the former back into either the. ash-pit or the tire box. Inniy device only thosinoke and gases return to the ash-pit, .where they are consumed below the grate liars; while the heavier products -are forced from the separating-tank (l in an entirely ditfcrcnt direction and are carried into auvater tank E or a natural body of water if such is conveniently located.

Wliat I claim as ne and desire to be secured by Letters lateiit is: i 1. In combination with a f'nrnace having from said separating-tank C to the ash-pit pipe-#9 coni-'- below the (frate bars eductioii municating with said passage C 'saitleduc` tion pipes-2 and 1t being in communication with means for forcing the smoke and heavy" unconsnined products of combustion through said si'iioke-tlue B into saidrseparating-tank C, said eduction pipes ti and t) beiiifinconlimunication with means for 'forcing the smoke proper from said separating-tank C through said passage C respectively into said ash-pitbelow said grate bars, and said water jet 7 being in communication .with water supply for the purpose of forcing the heavy uiiconsiinied4 products of combustion from said separating-tank C through said pipe I) into said water-tank E, substantially as described.

2. In combination with a furnace having an ash-pit and grate bars, a smoke-lue,an eduction pipe projecting into said smoke t'lue to a distance to equal lone-half of the diameter of said smoke-flue, the4 diameter of thefoutlet of said eduction pipe being `equal to that of saidsmok'e-tlue, a hollow separating-tank, a pasage connecting said smoke-fine with said sepaiatiiigtanl{', the distance between the points of )unction of said passage with said smoke-flue and theperip iei-y of the outlet of said eduetion pipe being equal to the diameter of said smokeflue; a passage leading from the top of said separating-tank to the ash-pit below the grate bars, a water-tank, and a passage leadnig from the bottom of said separating-tank to said water-tank, said edile-tion .pipe being in communication with means for forcing the smoke from said smoke-flue into the passage connecting said smokestlue with said separating-tank, said ysepaiating-tank and said passages being provided with means for forcine the smelte and heavyunconsuined irodiicts of combustion into said ashpitv an( water-tank, respectively, substanltially as described.

3. In combination with a furnace having an ashpit, a smoke-flue, an ednction pipe projecting into said smoke-flue to a distance to equal one-half ot the diameter of saidsmoke-tlue, tliediameter of the outlet of said eduction pipe being equal to that of said smoke-flue, a separating-tank provided i3 with passages leading to the asli-pit and a a of said smokeue, said eduction eeeyeo Y forcing the smoke and heavy unconsumet products ot combustion into said zisii-pitiiuid said wnter-tnk, respectiveijyf, Substantially deseibed.

in testimony 1. 'hereof il have hereunto set my nomi :met seal in the presence two subscribing witnesses.

BENED F. BRADY. L. s@

Witnesees z,

' M. T. HAUKINS.

Emmen-EFT* S ii Aw Water-tank reepeetiveiy, another passage 1 connecting said smoke-tine with said l rating-tank, the distance between the points of junction of said passage with smid smokelue und the peipheiy of the outlet ot' said I eduetion pipe being equal to the diameter s pipe being in communication with means for ore- 1 ing the smoke from Said sinokeue into Said passage connecting said smoke-Hue with said separating-tank, Said passages and said separating-tank being provided with nie-.ms for 

